Shackle



FIG. 1 is a perspective view of a shackle according to a first preferred embodiment of my new design;

FIG. 2 is a front elevational view of the shackle of FIG. 1;

FIG. 3 is a top plan view of the shackle of FIG. 1;

FIG. 4 is a left side elevational view of the shackle of FIG. 1;

FIG. 5 is a right side elevational view of the shackle of FIG. 1;

FIG. 6 is a rear elevational view of the shackle of FIG. 1;

FIG. 7 is bottom plan view of the shackle of FIG. 1;

FIG. 8 is a perspective view of a shackle according to a second preferred embodiment of my new design;

FIG. 9 is a second perspective view of the shackle of FIG. 8;

FIG. 10 is a front elevational view of the shackle of FIG. 8;

FIG. 11 is a top plan view of the shackle of FIG. 8;

FIG. 12 is a right side elevational view of the shackle of FIG. 8;

FIG. 13 is a left side elevational view of the shackle of FIG. 8;

FIG. 14 is rear elevational view of the shackle of FIG. 8;

FIG. 15 is a bottom plan view of the shackle of FIG. 8; and,

FIG. 16 is a perspective view of a shackle according to a third preferred embodiment of my new design.

The dashed lines in FIGS. 1-16 represent environment and are for illustrative purposes only and do not constitute part of the claimed design. The phantom lines in FIGS. 1-16 define the border between claimed and unclaimed matter. 

The ornamental design for a shackle, as shown and described. 